diwali | दिवाली
Also written as deepawali, divali
The appearance day of Mahalakshmi, the consort of Vishnu, and the day Shri Rama returned to Ayodhya on a vimana, aerial vehicle, after killing Ravana in Lanka. The citizens of Ayodhya lit up the city with earthen lamps, dipas, to welcome Him.
Reference: Prema Rasa Madira - The Intoxicating Bliss of Divine Love